More Muscles Of The LegsThere are 7 more muscles of the legs that we will study in addition to the following muscle groups that have already been discussed:
Deep Hip Outward Rotators Gluteals Hamstrings Adductors Triceps Surae Quadriceps Femoris These additional 7 leg muscles include: Quadratus Femoris Tensor Fascia Lata Sartorius Popliteus Tibialis Posterior Flexor Digitorum Longus Flexor Hallucis Longus Below is the muscles study aid for massage therapy students.
Quadratus FemorisOrigin is lateral ischial tuberosity.Insertion is greater trochanter. Action--laterally rotates hip.
Tensor Fascia LataOrigins are anterior iliac crest and anterior superior iliac spine.Insertion is iliotibial band. Actions--flexes hip, abducts hip, and medially rotates hip. This muscle also tenses the fascial band around the thigh.
SartoriusOrigin is anterior superior iliac spine.Insertion is medial proximal tibial shaft. Actions--flexes hip, abducts hip, laterally rotates hip, laterally rotates knee, medially rotates knee. Sartorius is the longest muscle in the body. It crosses the hip and knee joints. It is known as the tailor's muscle since tailors were known to sit cross-legged while sewing long ago.
PopliteusOrigin is lateral condyle of femur.Insertion is posterior proximal tibial shaft. Actions--flexes knee and medially rotates knee while knee is flexed. This is also known as the key to unlock the knee.
Tibialis PosteriorOrigins are posterior fibular shaft, posterior tibial shaft, and interosseous membrane.Insertions are bases of metatarsals 2,3, and 5, cuboid, cuneiform 3, and navicular bone. Actions--plantar flexes ankle and inverts foot.
Flexor Digitorum LongusOrigin is posterior tibial shaft.Insertion is distal phalanges 2-5. Actions--plantar flexes ankle and flexes digits 2-5.
Flexor Hallucis LongusOrigin is posterior fibular shaft.Insertion is distal phalanx of great toe. Actions--flexes great toe, plantar flexes ankle, inverts foot, and supports longitudinal arch.
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